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Finding the Fourth Proportional to 390,816.80, 586,225.20 and 250,848.80

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Solution

The fourth proportional to 390,816.80, 586,225.20 and 250,848.80 is: 376,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,816.80 : 586,225.20 = 250,848.80 : x
  2. Step 2: Convert to fraction form
    390,816.80/586,225.20 = 250,848.80/x
  3. Step 3: Cross multiply
    390,816.80x = 586,225.20 × 250,848.80
  4. Step 4: Simplify right side
    390,816.80x = 147,053,887,949.76
  5. Step 5: Solve for x
    x = 147,053,887,949.76/390,816.80
  6. Step 6: Final answer
    x = 376,273.20

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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.