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Finding the Fourth Proportional to 487,250.64, 672,439.32 and 272,386.80

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Solution

The fourth proportional to 487,250.64, 672,439.32 and 272,386.80 is: 375,912.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,250.64 : 672,439.32 = 272,386.80 : x
  2. Step 2: Convert to fraction form
    487,250.64/672,439.32 = 272,386.80/x
  3. Step 3: Cross multiply
    487,250.64x = 672,439.32 × 272,386.80
  4. Step 4: Simplify right side
    487,250.64x = 183,163,594,568.98
  5. Step 5: Solve for x
    x = 183,163,594,568.98/487,250.64
  6. Step 6: Final answer
    x = 375,912.48

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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.