Home / 312,815.52-431,681.40-169,575.12

Finding the Fourth Proportional to 312,815.52, 431,681.40 and 169,575.12

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Solution

The fourth proportional to 312,815.52, 431,681.40 and 169,575.12 is: 234,011.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,815.52 : 431,681.40 = 169,575.12 : x
  2. Step 2: Convert to fraction form
    312,815.52/431,681.40 = 169,575.12/x
  3. Step 3: Cross multiply
    312,815.52x = 431,681.40 × 169,575.12
  4. Step 4: Simplify right side
    312,815.52x = 73,202,425,206.77
  5. Step 5: Solve for x
    x = 73,202,425,206.77/312,815.52
  6. Step 6: Final answer
    x = 234,011.49

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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.