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Finding the Fourth Proportional to 311,460,886.80, 467,191,330.20 and 260,820,464.40

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Solution

The fourth proportional to 311,460,886.80, 467,191,330.20 and 260,820,464.40 is: 391,230,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,460,886.80 : 467,191,330.20 = 260,820,464.40 : x
  2. Step 2: Convert to fraction form
    311,460,886.80/467,191,330.20 = 260,820,464.40/x
  3. Step 3: Cross multiply
    311,460,886.80x = 467,191,330.20 × 260,820,464.40
  4. Step 4: Simplify right side
    311,460,886.80x = 121,853,059,706,417,744
  5. Step 5: Solve for x
    x = 121,853,059,706,417,744/311,460,886.80
  6. Step 6: Final answer
    x = 391,230,696.60

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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.