Home / 283,243.46-390,890.01-155,917.70

Finding the Fourth Proportional to 283,243.46, 390,890.01 and 155,917.70

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Solution

The fourth proportional to 283,243.46, 390,890.01 and 155,917.70 is: 215,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,243.46 : 390,890.01 = 155,917.70 : x
  2. Step 2: Convert to fraction form
    283,243.46/390,890.01 = 155,917.70/x
  3. Step 3: Cross multiply
    283,243.46x = 390,890.01 × 155,917.70
  4. Step 4: Simplify right side
    283,243.46x = 60,946,671,312.18
  5. Step 5: Solve for x
    x = 60,946,671,312.18/283,243.46
  6. Step 6: Final answer
    x = 215,174.15

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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.