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Finding the Fourth Proportional to 157,417.80, 217,345.47 and 127,335.60

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Solution

The fourth proportional to 157,417.80, 217,345.47 and 127,335.60 is: 175,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,417.80 : 217,345.47 = 127,335.60 : x
  2. Step 2: Convert to fraction form
    157,417.80/217,345.47 = 127,335.60/x
  3. Step 3: Cross multiply
    157,417.80x = 217,345.47 × 127,335.60
  4. Step 4: Simplify right side
    157,417.80x = 27,675,815,829.73
  5. Step 5: Solve for x
    x = 27,675,815,829.73/157,417.80
  6. Step 6: Final answer
    x = 175,811.22

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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.