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Finding the Fourth Proportional to 310,124.40, 465,218.77 and 85,484.87

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Solution

The fourth proportional to 310,124.40, 465,218.77 and 85,484.87 is: 128,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,124.40 : 465,218.77 = 85,484.87 : x
  2. Step 2: Convert to fraction form
    310,124.40/465,218.77 = 85,484.87/x
  3. Step 3: Cross multiply
    310,124.40x = 465,218.77 × 85,484.87
  4. Step 4: Simplify right side
    310,124.40x = 39,769,166,075.01
  5. Step 5: Solve for x
    x = 39,769,166,075.01/310,124.40
  6. Step 6: Final answer
    x = 128,236.17

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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.