Home / 280,459.08-387,038.52-159,587.64

Finding the Fourth Proportional to 280,459.08, 387,038.52 and 159,587.64

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Solution

The fourth proportional to 280,459.08, 387,038.52 and 159,587.64 is: 220,233.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,459.08 : 387,038.52 = 159,587.64 : x
  2. Step 2: Convert to fraction form
    280,459.08/387,038.52 = 159,587.64/x
  3. Step 3: Cross multiply
    280,459.08x = 387,038.52 × 159,587.64
  4. Step 4: Simplify right side
    280,459.08x = 61,766,563,995.89
  5. Step 5: Solve for x
    x = 61,766,563,995.89/280,459.08
  6. Step 6: Final answer
    x = 220,233.78

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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.