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Finding the Fourth Proportional to 282,325.80, 423,488.70 and 142,357.80

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Solution

The fourth proportional to 282,325.80, 423,488.70 and 142,357.80 is: 213,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,325.80 : 423,488.70 = 142,357.80 : x
  2. Step 2: Convert to fraction form
    282,325.80/423,488.70 = 142,357.80/x
  3. Step 3: Cross multiply
    282,325.80x = 423,488.70 × 142,357.80
  4. Step 4: Simplify right side
    282,325.80x = 60,286,919,656.86
  5. Step 5: Solve for x
    x = 60,286,919,656.86/282,325.80
  6. Step 6: Final answer
    x = 213,536.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.