Home / 282,711.32-390,144.06-155,389.88

Finding the Fourth Proportional to 282,711.32, 390,144.06 and 155,389.88

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Solution

The fourth proportional to 282,711.32, 390,144.06 and 155,389.88 is: 214,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,711.32 : 390,144.06 = 155,389.88 : x
  2. Step 2: Convert to fraction form
    282,711.32/390,144.06 = 155,389.88/x
  3. Step 3: Cross multiply
    282,711.32x = 390,144.06 × 155,389.88
  4. Step 4: Simplify right side
    282,711.32x = 60,624,438,666.11
  5. Step 5: Solve for x
    x = 60,624,438,666.11/282,711.32
  6. Step 6: Final answer
    x = 214,439.37

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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.