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Finding the Fourth Proportional to 315,652.50, 473,479.97 and 78,994.53

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Solution

The fourth proportional to 315,652.50, 473,479.97 and 78,994.53 is: 118,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,652.50 : 473,479.97 = 78,994.53 : x
  2. Step 2: Convert to fraction form
    315,652.50/473,479.97 = 78,994.53/x
  3. Step 3: Cross multiply
    315,652.50x = 473,479.97 × 78,994.53
  4. Step 4: Simplify right side
    315,652.50x = 37,402,327,299.59
  5. Step 5: Solve for x
    x = 37,402,327,299.59/315,652.50
  6. Step 6: Final answer
    x = 118,492.10

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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.