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Finding the Fourth Proportional to 518,902.20, 778,280.40 and 163,952.10

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Solution

The fourth proportional to 518,902.20, 778,280.40 and 163,952.10 is: 245,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,902.20 : 778,280.40 = 163,952.10 : x
  2. Step 2: Convert to fraction form
    518,902.20/778,280.40 = 163,952.10/x
  3. Step 3: Cross multiply
    518,902.20x = 778,280.40 × 163,952.10
  4. Step 4: Simplify right side
    518,902.20x = 127,600,705,968.84
  5. Step 5: Solve for x
    x = 127,600,705,968.84/518,902.20
  6. Step 6: Final answer
    x = 245,905.12

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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.