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Finding the Fourth Proportional to 347,756.60, 521,505.30 and 123,030.20

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Solution

The fourth proportional to 347,756.60, 521,505.30 and 123,030.20 is: 184,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,756.60 : 521,505.30 = 123,030.20 : x
  2. Step 2: Convert to fraction form
    347,756.60/521,505.30 = 123,030.20/x
  3. Step 3: Cross multiply
    347,756.60x = 521,505.30 × 123,030.20
  4. Step 4: Simplify right side
    347,756.60x = 64,160,901,360.06
  5. Step 5: Solve for x
    x = 64,160,901,360.06/347,756.60
  6. Step 6: Final answer
    x = 184,499.45

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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.