Home / 287,856.90-432,001.35-147,543.30

Finding the Fourth Proportional to 287,856.90, 432,001.35 and 147,543.30

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Solution

The fourth proportional to 287,856.90, 432,001.35 and 147,543.30 is: 221,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,856.90 : 432,001.35 = 147,543.30 : x
  2. Step 2: Convert to fraction form
    287,856.90/432,001.35 = 147,543.30/x
  3. Step 3: Cross multiply
    287,856.90x = 432,001.35 × 147,543.30
  4. Step 4: Simplify right side
    287,856.90x = 63,738,904,783.46
  5. Step 5: Solve for x
    x = 63,738,904,783.46/287,856.90
  6. Step 6: Final answer
    x = 221,425.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.