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Finding the Fourth Proportional to 280,572.48, 387,188.88 and 153,248.16

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Solution

The fourth proportional to 280,572.48, 387,188.88 and 153,248.16 is: 211,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,572.48 : 387,188.88 = 153,248.16 : x
  2. Step 2: Convert to fraction form
    280,572.48/387,188.88 = 153,248.16/x
  3. Step 3: Cross multiply
    280,572.48x = 387,188.88 × 153,248.16
  4. Step 4: Simplify right side
    280,572.48x = 59,335,983,432.46
  5. Step 5: Solve for x
    x = 59,335,983,432.46/280,572.48
  6. Step 6: Final answer
    x = 211,481.84

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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.