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Finding the Fourth Proportional to 230,549.50, 318,420.75 and 154,966.78

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Solution

The fourth proportional to 230,549.50, 318,420.75 and 154,966.78 is: 214,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,549.50 : 318,420.75 = 154,966.78 : x
  2. Step 2: Convert to fraction form
    230,549.50/318,420.75 = 154,966.78/x
  3. Step 3: Cross multiply
    230,549.50x = 318,420.75 × 154,966.78
  4. Step 4: Simplify right side
    230,549.50x = 49,344,638,312.69
  5. Step 5: Solve for x
    x = 49,344,638,312.69/230,549.50
  6. Step 6: Final answer
    x = 214,030.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.