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Finding the Fourth Proportional to 347,345.80, 521,018.70 and 98,027.80

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Solution

The fourth proportional to 347,345.80, 521,018.70 and 98,027.80 is: 147,041.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,345.80 : 521,018.70 = 98,027.80 : x
  2. Step 2: Convert to fraction form
    347,345.80/521,018.70 = 98,027.80/x
  3. Step 3: Cross multiply
    347,345.80x = 521,018.70 × 98,027.80
  4. Step 4: Simplify right side
    347,345.80x = 51,074,316,919.86
  5. Step 5: Solve for x
    x = 51,074,316,919.86/347,345.80
  6. Step 6: Final answer
    x = 147,041.70

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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.