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Finding the Fourth Proportional to 310,875.45, 429,008.10 and 176,739.45

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Solution

The fourth proportional to 310,875.45, 429,008.10 and 176,739.45 is: 243,900.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,875.45 : 429,008.10 = 176,739.45 : x
  2. Step 2: Convert to fraction form
    310,875.45/429,008.10 = 176,739.45/x
  3. Step 3: Cross multiply
    310,875.45x = 429,008.10 × 176,739.45
  4. Step 4: Simplify right side
    310,875.45x = 75,822,655,639.55
  5. Step 5: Solve for x
    x = 75,822,655,639.55/310,875.45
  6. Step 6: Final answer
    x = 243,900.43

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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.