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Finding the Fourth Proportional to 498,856.80, 688,411.20 and 272,503.20

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Solution

The fourth proportional to 498,856.80, 688,411.20 and 272,503.20 is: 376,048.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,856.80 : 688,411.20 = 272,503.20 : x
  2. Step 2: Convert to fraction form
    498,856.80/688,411.20 = 272,503.20/x
  3. Step 3: Cross multiply
    498,856.80x = 688,411.20 × 272,503.20
  4. Step 4: Simplify right side
    498,856.80x = 187,594,254,915.84
  5. Step 5: Solve for x
    x = 187,594,254,915.84/498,856.80
  6. Step 6: Final answer
    x = 376,048.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.