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Finding the Fourth Proportional to 261,027.60, 390,666.60 and 229,534.80

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Solution

The fourth proportional to 261,027.60, 390,666.60 and 229,534.80 is: 343,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,027.60 : 390,666.60 = 229,534.80 : x
  2. Step 2: Convert to fraction form
    261,027.60/390,666.60 = 229,534.80/x
  3. Step 3: Cross multiply
    261,027.60x = 390,666.60 × 229,534.80
  4. Step 4: Simplify right side
    261,027.60x = 89,671,579,897.68
  5. Step 5: Solve for x
    x = 89,671,579,897.68/261,027.60
  6. Step 6: Final answer
    x = 343,532.94

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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.