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Finding the Fourth Proportional to 472,045.16, 651,124.66 and 280,915.88

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Solution

The fourth proportional to 472,045.16, 651,124.66 and 280,915.88 is: 387,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,045.16 : 651,124.66 = 280,915.88 : x
  2. Step 2: Convert to fraction form
    472,045.16/651,124.66 = 280,915.88/x
  3. Step 3: Cross multiply
    472,045.16x = 651,124.66 × 280,915.88
  4. Step 4: Simplify right side
    472,045.16x = 182,911,256,853.60
  5. Step 5: Solve for x
    x = 182,911,256,853.60/472,045.16
  6. Step 6: Final answer
    x = 387,486.78

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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.