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Finding the Fourth Proportional to 280,654.79, 387,303.98 and 159,796.13

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Solution

The fourth proportional to 280,654.79, 387,303.98 and 159,796.13 is: 220,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,654.79 : 387,303.98 = 159,796.13 : x
  2. Step 2: Convert to fraction form
    280,654.79/387,303.98 = 159,796.13/x
  3. Step 3: Cross multiply
    280,654.79x = 387,303.98 × 159,796.13
  4. Step 4: Simplify right side
    280,654.79x = 61,889,674,402.10
  5. Step 5: Solve for x
    x = 61,889,674,402.10/280,654.79
  6. Step 6: Final answer
    x = 220,518.86

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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.