Home / 282,885.28-390,384.48-155,561.76

Finding the Fourth Proportional to 282,885.28, 390,384.48 and 155,561.76

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Solution

The fourth proportional to 282,885.28, 390,384.48 and 155,561.76 is: 214,676.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,885.28 : 390,384.48 = 155,561.76 : x
  2. Step 2: Convert to fraction form
    282,885.28/390,384.48 = 155,561.76/x
  3. Step 3: Cross multiply
    282,885.28x = 390,384.48 × 155,561.76
  4. Step 4: Simplify right side
    282,885.28x = 60,728,896,785.48
  5. Step 5: Solve for x
    x = 60,728,896,785.48/282,885.28
  6. Step 6: Final answer
    x = 214,676.77

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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.