Home / 345,609.18-518,416.20-108,970.92

Finding the Fourth Proportional to 345,609.18, 518,416.20 and 108,970.92

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Solution

The fourth proportional to 345,609.18, 518,416.20 and 108,970.92 is: 163,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,609.18 : 518,416.20 = 108,970.92 : x
  2. Step 2: Convert to fraction form
    345,609.18/518,416.20 = 108,970.92/x
  3. Step 3: Cross multiply
    345,609.18x = 518,416.20 × 108,970.92
  4. Step 4: Simplify right side
    345,609.18x = 56,492,290,256.90
  5. Step 5: Solve for x
    x = 56,492,290,256.90/345,609.18
  6. Step 6: Final answer
    x = 163,457.15

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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.