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Finding the Fourth Proportional to 388,875.60, 582,535.80 and 262,904.40

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Solution

The fourth proportional to 388,875.60, 582,535.80 and 262,904.40 is: 393,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,875.60 : 582,535.80 = 262,904.40 : x
  2. Step 2: Convert to fraction form
    388,875.60/582,535.80 = 262,904.40/x
  3. Step 3: Cross multiply
    388,875.60x = 582,535.80 × 262,904.40
  4. Step 4: Simplify right side
    388,875.60x = 153,151,224,977.52
  5. Step 5: Solve for x
    x = 153,151,224,977.52/388,875.60
  6. Step 6: Final answer
    x = 393,830.89

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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.