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Finding the Fourth Proportional to 289,706,948.30, 434,637,404.85 and 125,874,404.30

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Solution

The fourth proportional to 289,706,948.30, 434,637,404.85 and 125,874,404.30 is: 188,845,054.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,706,948.30 : 434,637,404.85 = 125,874,404.30 : x
  2. Step 2: Convert to fraction form
    289,706,948.30/434,637,404.85 = 125,874,404.30/x
  3. Step 3: Cross multiply
    289,706,948.30x = 434,637,404.85 × 125,874,404.30
  4. Step 4: Simplify right side
    289,706,948.30x = 54,709,724,421,991,680
  5. Step 5: Solve for x
    x = 54,709,724,421,991,680/289,706,948.30
  6. Step 6: Final answer
    x = 188,845,054.44

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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.