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Finding the Fourth Proportional to 309,967.65, 427,737.53 and 173,988.93

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Solution

The fourth proportional to 309,967.65, 427,737.53 and 173,988.93 is: 240,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,967.65 : 427,737.53 = 173,988.93 : x
  2. Step 2: Convert to fraction form
    309,967.65/427,737.53 = 173,988.93/x
  3. Step 3: Cross multiply
    309,967.65x = 427,737.53 × 173,988.93
  4. Step 4: Simplify right side
    309,967.65x = 74,421,595,165.54
  5. Step 5: Solve for x
    x = 74,421,595,165.54/309,967.65
  6. Step 6: Final answer
    x = 240,094.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.