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Finding the Fourth Proportional to 423,281.04, 634,925.12 and 107,738

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Solution

The fourth proportional to 423,281.04, 634,925.12 and 107,738 is: 161,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,281.04 : 634,925.12 = 107,738 : x
  2. Step 2: Convert to fraction form
    423,281.04/634,925.12 = 107,738/x
  3. Step 3: Cross multiply
    423,281.04x = 634,925.12 × 107,738
  4. Step 4: Simplify right side
    423,281.04x = 68,405,562,578.56
  5. Step 5: Solve for x
    x = 68,405,562,578.56/423,281.04
  6. Step 6: Final answer
    x = 161,607.91

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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.