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Finding the Fourth Proportional to 310,011.04, 465,021.96 and 85,370.32

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Solution

The fourth proportional to 310,011.04, 465,021.96 and 85,370.32 is: 128,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,011.04 : 465,021.96 = 85,370.32 : x
  2. Step 2: Convert to fraction form
    310,011.04/465,021.96 = 85,370.32/x
  3. Step 3: Cross multiply
    310,011.04x = 465,021.96 × 85,370.32
  4. Step 4: Simplify right side
    310,011.04x = 39,699,073,532.23
  5. Step 5: Solve for x
    x = 39,699,073,532.23/310,011.04
  6. Step 6: Final answer
    x = 128,056.97

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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.