Home / 429,195,467.60-643,793,201.40-156,575,128.40

Finding the Fourth Proportional to 429,195,467.60, 643,793,201.40 and 156,575,128.40

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Solution

The fourth proportional to 429,195,467.60, 643,793,201.40 and 156,575,128.40 is: 234,862,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,195,467.60 : 643,793,201.40 = 156,575,128.40 : x
  2. Step 2: Convert to fraction form
    429,195,467.60/643,793,201.40 = 156,575,128.40/x
  3. Step 3: Cross multiply
    429,195,467.60x = 643,793,201.40 × 156,575,128.40
  4. Step 4: Simplify right side
    429,195,467.60x = 100,802,003,172,252,064
  5. Step 5: Solve for x
    x = 100,802,003,172,252,064/429,195,467.60
  6. Step 6: Final answer
    x = 234,862,692.60

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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.