Home / 261,210,646.17-391,872,656.30-79,453,100.25

Finding the Fourth Proportional to 261,210,646.17, 391,872,656.30 and 79,453,100.25

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Solution

The fourth proportional to 261,210,646.17, 391,872,656.30 and 79,453,100.25 is: 119,196,893.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,646.17 : 391,872,656.30 = 79,453,100.25 : x
  2. Step 2: Convert to fraction form
    261,210,646.17/391,872,656.30 = 79,453,100.25/x
  3. Step 3: Cross multiply
    261,210,646.17x = 391,872,656.30 × 79,453,100.25
  4. Step 4: Simplify right side
    261,210,646.17x = 31,135,497,445,840,428
  5. Step 5: Solve for x
    x = 31,135,497,445,840,428/261,210,646.17
  6. Step 6: Final answer
    x = 119,196,893.01

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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.