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Finding the Fourth Proportional to 386,313,445.60, 579,271,102.80 and 143,851,544.80

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Solution

The fourth proportional to 386,313,445.60, 579,271,102.80 and 143,851,544.80 is: 215,703,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,313,445.60 : 579,271,102.80 = 143,851,544.80 : x
  2. Step 2: Convert to fraction form
    386,313,445.60/579,271,102.80 = 143,851,544.80/x
  3. Step 3: Cross multiply
    386,313,445.60x = 579,271,102.80 × 143,851,544.80
  4. Step 4: Simplify right side
    386,313,445.60x = 83,329,042,995,779,600
  5. Step 5: Solve for x
    x = 83,329,042,995,779,600/386,313,445.60
  6. Step 6: Final answer
    x = 215,703,191.14

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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.