Home / 283,689.30-391,484.31-156,362.10

Finding the Fourth Proportional to 283,689.30, 391,484.31 and 156,362.10

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Solution

The fourth proportional to 283,689.30, 391,484.31 and 156,362.10 is: 215,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,689.30 : 391,484.31 = 156,362.10 : x
  2. Step 2: Convert to fraction form
    283,689.30/391,484.31 = 156,362.10/x
  3. Step 3: Cross multiply
    283,689.30x = 391,484.31 × 156,362.10
  4. Step 4: Simplify right side
    283,689.30x = 61,213,308,828.65
  5. Step 5: Solve for x
    x = 61,213,308,828.65/283,689.30
  6. Step 6: Final answer
    x = 215,775.88

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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.