Home / 282,715.64-390,142.58-155,391.20

Finding the Fourth Proportional to 282,715.64, 390,142.58 and 155,391.20

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Solution

The fourth proportional to 282,715.64, 390,142.58 and 155,391.20 is: 214,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,715.64 : 390,142.58 = 155,391.20 : x
  2. Step 2: Convert to fraction form
    282,715.64/390,142.58 = 155,391.20/x
  3. Step 3: Cross multiply
    282,715.64x = 390,142.58 × 155,391.20
  4. Step 4: Simplify right side
    282,715.64x = 60,624,723,677.30
  5. Step 5: Solve for x
    x = 60,624,723,677.30/282,715.64
  6. Step 6: Final answer
    x = 214,437.11

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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.