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Finding the Fourth Proportional to 500,029.88, 690,043.05 and 270,587.15

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Solution

The fourth proportional to 500,029.88, 690,043.05 and 270,587.15 is: 373,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,029.88 : 690,043.05 = 270,587.15 : x
  2. Step 2: Convert to fraction form
    500,029.88/690,043.05 = 270,587.15/x
  3. Step 3: Cross multiply
    500,029.88x = 690,043.05 × 270,587.15
  4. Step 4: Simplify right side
    500,029.88x = 186,716,778,826.59
  5. Step 5: Solve for x
    x = 186,716,778,826.59/500,029.88
  6. Step 6: Final answer
    x = 373,411.25

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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.