Home / 287,938.40-397,354.72-160,613.92

Finding the Fourth Proportional to 287,938.40, 397,354.72 and 160,613.92

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Solution

The fourth proportional to 287,938.40, 397,354.72 and 160,613.92 is: 221,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,938.40 : 397,354.72 = 160,613.92 : x
  2. Step 2: Convert to fraction form
    287,938.40/397,354.72 = 160,613.92/x
  3. Step 3: Cross multiply
    287,938.40x = 397,354.72 × 160,613.92
  4. Step 4: Simplify right side
    287,938.40x = 63,820,699,209.70
  5. Step 5: Solve for x
    x = 63,820,699,209.70/287,938.40
  6. Step 6: Final answer
    x = 221,647.06

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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.