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Finding the Fourth Proportional to 518,959.40, 778,463.40 and 164,001.20

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Solution

The fourth proportional to 518,959.40, 778,463.40 and 164,001.20 is: 246,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,959.40 : 778,463.40 = 164,001.20 : x
  2. Step 2: Convert to fraction form
    518,959.40/778,463.40 = 164,001.20/x
  3. Step 3: Cross multiply
    518,959.40x = 778,463.40 × 164,001.20
  4. Step 4: Simplify right side
    518,959.40x = 127,668,931,756.08
  5. Step 5: Solve for x
    x = 127,668,931,756.08/518,959.40
  6. Step 6: Final answer
    x = 246,009.48

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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.