Home / 287,695.96-397,021.35-156,872.65

Finding the Fourth Proportional to 287,695.96, 397,021.35 and 156,872.65

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Solution

The fourth proportional to 287,695.96, 397,021.35 and 156,872.65 is: 216,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,695.96 : 397,021.35 = 156,872.65 : x
  2. Step 2: Convert to fraction form
    287,695.96/397,021.35 = 156,872.65/x
  3. Step 3: Cross multiply
    287,695.96x = 397,021.35 × 156,872.65
  4. Step 4: Simplify right side
    287,695.96x = 62,281,791,281.08
  5. Step 5: Solve for x
    x = 62,281,791,281.08/287,695.96
  6. Step 6: Final answer
    x = 216,484.76

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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.