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Finding the Fourth Proportional to 315,656.60, 473,484.90 and 78,998.90

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Solution

The fourth proportional to 315,656.60, 473,484.90 and 78,998.90 is: 118,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,656.60 : 473,484.90 = 78,998.90 : x
  2. Step 2: Convert to fraction form
    315,656.60/473,484.90 = 78,998.90/x
  3. Step 3: Cross multiply
    315,656.60x = 473,484.90 × 78,998.90
  4. Step 4: Simplify right side
    315,656.60x = 37,404,786,266.61
  5. Step 5: Solve for x
    x = 37,404,786,266.61/315,656.60
  6. Step 6: Final answer
    x = 118,498.35

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1.5x scale

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.