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Finding the Fourth Proportional to 310,337.34, 428,265.81 and 176,201.34

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Solution

The fourth proportional to 310,337.34, 428,265.81 and 176,201.34 is: 243,158.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,337.34 : 428,265.81 = 176,201.34 : x
  2. Step 2: Convert to fraction form
    310,337.34/428,265.81 = 176,201.34/x
  3. Step 3: Cross multiply
    310,337.34x = 428,265.81 × 176,201.34
  4. Step 4: Simplify right side
    310,337.34x = 75,461,009,598.19
  5. Step 5: Solve for x
    x = 75,461,009,598.19/310,337.34
  6. Step 6: Final answer
    x = 243,158.01

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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.