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Finding the Fourth Proportional to 487,271.70, 730,907.55 and 238,439.70

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Solution

The fourth proportional to 487,271.70, 730,907.55 and 238,439.70 is: 357,659.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,271.70 : 730,907.55 = 238,439.70 : x
  2. Step 2: Convert to fraction form
    487,271.70/730,907.55 = 238,439.70/x
  3. Step 3: Cross multiply
    487,271.70x = 730,907.55 × 238,439.70
  4. Step 4: Simplify right side
    487,271.70x = 174,277,376,949.74
  5. Step 5: Solve for x
    x = 174,277,376,949.74/487,271.70
  6. Step 6: Final answer
    x = 357,659.55

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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.