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Finding the Fourth Proportional to 507,360.30, 761,040.45 and 258,528.30

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Solution

The fourth proportional to 507,360.30, 761,040.45 and 258,528.30 is: 387,792.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,360.30 : 761,040.45 = 258,528.30 : x
  2. Step 2: Convert to fraction form
    507,360.30/761,040.45 = 258,528.30/x
  3. Step 3: Cross multiply
    507,360.30x = 761,040.45 × 258,528.30
  4. Step 4: Simplify right side
    507,360.30x = 196,750,493,769.74
  5. Step 5: Solve for x
    x = 196,750,493,769.74/507,360.30
  6. Step 6: Final answer
    x = 387,792.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.