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Finding the Fourth Proportional to 347,230.60, 521,018.70 and 136,875.40

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Solution

The fourth proportional to 347,230.60, 521,018.70 and 136,875.40 is: 205,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,230.60 : 521,018.70 = 136,875.40 : x
  2. Step 2: Convert to fraction form
    347,230.60/521,018.70 = 136,875.40/x
  3. Step 3: Cross multiply
    347,230.60x = 521,018.70 × 136,875.40
  4. Step 4: Simplify right side
    347,230.60x = 71,314,642,969.98
  5. Step 5: Solve for x
    x = 71,314,642,969.98/347,230.60
  6. Step 6: Final answer
    x = 205,381.22

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1.5x scale

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.