Home / 429,224,428.10-643,883,881.35-138,041,999.30

Finding the Fourth Proportional to 429,224,428.10, 643,883,881.35 and 138,041,999.30

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Solution

The fourth proportional to 429,224,428.10, 643,883,881.35 and 138,041,999.30 is: 207,078,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,224,428.10 : 643,883,881.35 = 138,041,999.30 : x
  2. Step 2: Convert to fraction form
    429,224,428.10/643,883,881.35 = 138,041,999.30/x
  3. Step 3: Cross multiply
    429,224,428.10x = 643,883,881.35 × 138,041,999.30
  4. Step 4: Simplify right side
    429,224,428.10x = 88,883,018,298,598,000
  5. Step 5: Solve for x
    x = 88,883,018,298,598,000/429,224,428.10
  6. Step 6: Final answer
    x = 207,078,191.45

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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.