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Finding the Fourth Proportional to 282,685.60, 424,028.40 and 278,538.40

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Solution

The fourth proportional to 282,685.60, 424,028.40 and 278,538.40 is: 417,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,685.60 : 424,028.40 = 278,538.40 : x
  2. Step 2: Convert to fraction form
    282,685.60/424,028.40 = 278,538.40/x
  3. Step 3: Cross multiply
    282,685.60x = 424,028.40 × 278,538.40
  4. Step 4: Simplify right side
    282,685.60x = 118,108,192,090.56
  5. Step 5: Solve for x
    x = 118,108,192,090.56/282,685.60
  6. Step 6: Final answer
    x = 417,807.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.