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Finding the Fourth Proportional to 220,587.71, 304,412.78 and 119,985.71

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Solution

The fourth proportional to 220,587.71, 304,412.78 and 119,985.71 is: 165,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,587.71 : 304,412.78 = 119,985.71 : x
  2. Step 2: Convert to fraction form
    220,587.71/304,412.78 = 119,985.71/x
  3. Step 3: Cross multiply
    220,587.71x = 304,412.78 × 119,985.71
  4. Step 4: Simplify right side
    220,587.71x = 36,525,182,319.27
  5. Step 5: Solve for x
    x = 36,525,182,319.27/220,587.71
  6. Step 6: Final answer
    x = 165,581.22

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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.