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Finding the Fourth Proportional to 280,549.08, 387,160.20 and 159,698.16

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Solution

The fourth proportional to 280,549.08, 387,160.20 and 159,698.16 is: 220,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,549.08 : 387,160.20 = 159,698.16 : x
  2. Step 2: Convert to fraction form
    280,549.08/387,160.20 = 159,698.16/x
  3. Step 3: Cross multiply
    280,549.08x = 387,160.20 × 159,698.16
  4. Step 4: Simplify right side
    280,549.08x = 61,828,771,565.23
  5. Step 5: Solve for x
    x = 61,828,771,565.23/280,549.08
  6. Step 6: Final answer
    x = 220,384.87

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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.