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Finding the Fourth Proportional to 370,309.80, 555,464.70 and 346,981.80

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Solution

The fourth proportional to 370,309.80, 555,464.70 and 346,981.80 is: 520,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,309.80 : 555,464.70 = 346,981.80 : x
  2. Step 2: Convert to fraction form
    370,309.80/555,464.70 = 346,981.80/x
  3. Step 3: Cross multiply
    370,309.80x = 555,464.70 × 346,981.80
  4. Step 4: Simplify right side
    370,309.80x = 192,736,141,442.46
  5. Step 5: Solve for x
    x = 192,736,141,442.46/370,309.80
  6. Step 6: Final answer
    x = 520,472.70

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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.