Home / 282,761.64-390,234.78-155,461.23

Finding the Fourth Proportional to 282,761.64, 390,234.78 and 155,461.23

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Solution

The fourth proportional to 282,761.64, 390,234.78 and 155,461.23 is: 214,549.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,761.64 : 390,234.78 = 155,461.23 : x
  2. Step 2: Convert to fraction form
    282,761.64/390,234.78 = 155,461.23/x
  3. Step 3: Cross multiply
    282,761.64x = 390,234.78 × 155,461.23
  4. Step 4: Simplify right side
    282,761.64x = 60,666,378,887.58
  5. Step 5: Solve for x
    x = 60,666,378,887.58/282,761.64
  6. Step 6: Final answer
    x = 214,549.54

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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.