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Finding the Fourth Proportional to 293,803.20, 402,807.90 and 288,488.78

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Solution

The fourth proportional to 293,803.20, 402,807.90 and 288,488.78 is: 395,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,803.20 : 402,807.90 = 288,488.78 : x
  2. Step 2: Convert to fraction form
    293,803.20/402,807.90 = 288,488.78/x
  3. Step 3: Cross multiply
    293,803.20x = 402,807.90 × 288,488.78
  4. Step 4: Simplify right side
    293,803.20x = 116,205,559,645.36
  5. Step 5: Solve for x
    x = 116,205,559,645.36/293,803.20
  6. Step 6: Final answer
    x = 395,521.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.