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Finding the Fourth Proportional to 518,875.60, 778,255.80 and 144,936.40

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Solution

The fourth proportional to 518,875.60, 778,255.80 and 144,936.40 is: 217,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,875.60 : 778,255.80 = 144,936.40 : x
  2. Step 2: Convert to fraction form
    518,875.60/778,255.80 = 144,936.40/x
  3. Step 3: Cross multiply
    518,875.60x = 778,255.80 × 144,936.40
  4. Step 4: Simplify right side
    518,875.60x = 112,797,593,931.12
  5. Step 5: Solve for x
    x = 112,797,593,931.12/518,875.60
  6. Step 6: Final answer
    x = 217,388.51

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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.