Home / 282,754.02-390,190.65-155,428.70

Finding the Fourth Proportional to 282,754.02, 390,190.65 and 155,428.70

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Solution

The fourth proportional to 282,754.02, 390,190.65 and 155,428.70 is: 214,486.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,754.02 : 390,190.65 = 155,428.70 : x
  2. Step 2: Convert to fraction form
    282,754.02/390,190.65 = 155,428.70/x
  3. Step 3: Cross multiply
    282,754.02x = 390,190.65 × 155,428.70
  4. Step 4: Simplify right side
    282,754.02x = 60,646,825,481.66
  5. Step 5: Solve for x
    x = 60,646,825,481.66/282,754.02
  6. Step 6: Final answer
    x = 214,486.17

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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.