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Finding the Fourth Proportional to 347,316, 521,041.68 and 147,634.08

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Solution

The fourth proportional to 347,316, 521,041.68 and 147,634.08 is: 221,479.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,316 : 521,041.68 = 147,634.08 : x
  2. Step 2: Convert to fraction form
    347,316/521,041.68 = 147,634.08/x
  3. Step 3: Cross multiply
    347,316x = 521,041.68 × 147,634.08
  4. Step 4: Simplify right side
    347,316x = 76,923,509,068.45
  5. Step 5: Solve for x
    x = 76,923,509,068.45/347,316
  6. Step 6: Final answer
    x = 221,479.89

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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.