Home / 405,381.18-608,158.02-121,068.74

Finding the Fourth Proportional to 405,381.18, 608,158.02 and 121,068.74

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Solution

The fourth proportional to 405,381.18, 608,158.02 and 121,068.74 is: 181,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,381.18 : 608,158.02 = 121,068.74 : x
  2. Step 2: Convert to fraction form
    405,381.18/608,158.02 = 121,068.74/x
  3. Step 3: Cross multiply
    405,381.18x = 608,158.02 × 121,068.74
  4. Step 4: Simplify right side
    405,381.18x = 73,628,925,202.29
  5. Step 5: Solve for x
    x = 73,628,925,202.29/405,381.18
  6. Step 6: Final answer
    x = 181,628.87

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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.