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Finding the Fourth Proportional to 487,652.70, 731,479.05 and 238,820.70

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Solution

The fourth proportional to 487,652.70, 731,479.05 and 238,820.70 is: 358,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,652.70 : 731,479.05 = 238,820.70 : x
  2. Step 2: Convert to fraction form
    487,652.70/731,479.05 = 238,820.70/x
  3. Step 3: Cross multiply
    487,652.70x = 731,479.05 × 238,820.70
  4. Step 4: Simplify right side
    487,652.70x = 174,692,338,756.34
  5. Step 5: Solve for x
    x = 174,692,338,756.34/487,652.70
  6. Step 6: Final answer
    x = 358,231.05

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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.