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Finding the Fourth Proportional to 387,888.73, 535,275.60 and 235,017.43

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Solution

The fourth proportional to 387,888.73, 535,275.60 and 235,017.43 is: 324,317.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,888.73 : 535,275.60 = 235,017.43 : x
  2. Step 2: Convert to fraction form
    387,888.73/535,275.60 = 235,017.43/x
  3. Step 3: Cross multiply
    387,888.73x = 535,275.60 × 235,017.43
  4. Step 4: Simplify right side
    387,888.73x = 125,799,095,853.71
  5. Step 5: Solve for x
    x = 125,799,095,853.71/387,888.73
  6. Step 6: Final answer
    x = 324,317.48

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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.