Home / 287,678.13-397,001.03-160,340.05

Finding the Fourth Proportional to 287,678.13, 397,001.03 and 160,340.05

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Solution

The fourth proportional to 287,678.13, 397,001.03 and 160,340.05 is: 221,272.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,678.13 : 397,001.03 = 160,340.05 : x
  2. Step 2: Convert to fraction form
    287,678.13/397,001.03 = 160,340.05/x
  3. Step 3: Cross multiply
    287,678.13x = 397,001.03 × 160,340.05
  4. Step 4: Simplify right side
    287,678.13x = 63,655,165,000.25
  5. Step 5: Solve for x
    x = 63,655,165,000.25/287,678.13
  6. Step 6: Final answer
    x = 221,272.17

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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.