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Finding the Fourth Proportional to 323,999.20, 484,443.60 and 240,018.40

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Solution

The fourth proportional to 323,999.20, 484,443.60 and 240,018.40 is: 358,875.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,999.20 : 484,443.60 = 240,018.40 : x
  2. Step 2: Convert to fraction form
    323,999.20/484,443.60 = 240,018.40/x
  3. Step 3: Cross multiply
    323,999.20x = 484,443.60 × 240,018.40
  4. Step 4: Simplify right side
    323,999.20x = 116,275,377,762.24
  5. Step 5: Solve for x
    x = 116,275,377,762.24/323,999.20
  6. Step 6: Final answer
    x = 358,875.51

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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.