Home / 223,423.18-308,253.08-138,589.45

Finding the Fourth Proportional to 223,423.18, 308,253.08 and 138,589.45

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Solution

The fourth proportional to 223,423.18, 308,253.08 and 138,589.45 is: 191,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,423.18 : 308,253.08 = 138,589.45 : x
  2. Step 2: Convert to fraction form
    223,423.18/308,253.08 = 138,589.45/x
  3. Step 3: Cross multiply
    223,423.18x = 308,253.08 × 138,589.45
  4. Step 4: Simplify right side
    223,423.18x = 42,720,624,393.85
  5. Step 5: Solve for x
    x = 42,720,624,393.85/223,423.18
  6. Step 6: Final answer
    x = 191,209.46

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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.