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Finding the Fourth Proportional to 207,970.76, 286,999.65 and 112,477.46

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Solution

The fourth proportional to 207,970.76, 286,999.65 and 112,477.46 is: 155,218.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,970.76 : 286,999.65 = 112,477.46 : x
  2. Step 2: Convert to fraction form
    207,970.76/286,999.65 = 112,477.46/x
  3. Step 3: Cross multiply
    207,970.76x = 286,999.65 × 112,477.46
  4. Step 4: Simplify right side
    207,970.76x = 32,280,990,217.89
  5. Step 5: Solve for x
    x = 32,280,990,217.89/207,970.76
  6. Step 6: Final answer
    x = 155,218.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.