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Finding the Fourth Proportional to 398,056.80, 596,307.60 and 239,815.20

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Solution

The fourth proportional to 398,056.80, 596,307.60 and 239,815.20 is: 359,254.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,056.80 : 596,307.60 = 239,815.20 : x
  2. Step 2: Convert to fraction form
    398,056.80/596,307.60 = 239,815.20/x
  3. Step 3: Cross multiply
    398,056.80x = 596,307.60 × 239,815.20
  4. Step 4: Simplify right side
    398,056.80x = 143,003,626,355.52
  5. Step 5: Solve for x
    x = 143,003,626,355.52/398,056.80
  6. Step 6: Final answer
    x = 359,254.32

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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.