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Finding the Fourth Proportional to 287,346.73, 396,510.10 and 160,034.17

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Solution

The fourth proportional to 287,346.73, 396,510.10 and 160,034.17 is: 220,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,346.73 : 396,510.10 = 160,034.17 : x
  2. Step 2: Convert to fraction form
    287,346.73/396,510.10 = 160,034.17/x
  3. Step 3: Cross multiply
    287,346.73x = 396,510.10 × 160,034.17
  4. Step 4: Simplify right side
    287,346.73x = 63,455,164,750.12
  5. Step 5: Solve for x
    x = 63,455,164,750.12/287,346.73
  6. Step 6: Final answer
    x = 220,831.34

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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.