Home / 283,140.28-390,733.64-155,815.87

Finding the Fourth Proportional to 283,140.28, 390,733.64 and 155,815.87

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Solution

The fourth proportional to 283,140.28, 390,733.64 and 155,815.87 is: 215,025.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,140.28 : 390,733.64 = 155,815.87 : x
  2. Step 2: Convert to fraction form
    283,140.28/390,733.64 = 155,815.87/x
  3. Step 3: Cross multiply
    283,140.28x = 390,733.64 × 155,815.87
  4. Step 4: Simplify right side
    283,140.28x = 60,882,502,642.16
  5. Step 5: Solve for x
    x = 60,882,502,642.16/283,140.28
  6. Step 6: Final answer
    x = 215,025.93

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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.