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Finding the Fourth Proportional to 357,870.34, 536,805.51 and 121,379.10

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Solution

The fourth proportional to 357,870.34, 536,805.51 and 121,379.10 is: 182,068.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,870.34 : 536,805.51 = 121,379.10 : x
  2. Step 2: Convert to fraction form
    357,870.34/536,805.51 = 121,379.10/x
  3. Step 3: Cross multiply
    357,870.34x = 536,805.51 × 121,379.10
  4. Step 4: Simplify right side
    357,870.34x = 65,156,969,678.84
  5. Step 5: Solve for x
    x = 65,156,969,678.84/357,870.34
  6. Step 6: Final answer
    x = 182,068.65

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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.