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Finding the Fourth Proportional to 559,981.80, 772,775.64 and 305,332.98

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Solution

The fourth proportional to 559,981.80, 772,775.64 and 305,332.98 is: 421,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,981.80 : 772,775.64 = 305,332.98 : x
  2. Step 2: Convert to fraction form
    559,981.80/772,775.64 = 305,332.98/x
  3. Step 3: Cross multiply
    559,981.80x = 772,775.64 × 305,332.98
  4. Step 4: Simplify right side
    559,981.80x = 235,953,889,032.61
  5. Step 5: Solve for x
    x = 235,953,889,032.61/559,981.80
  6. Step 6: Final answer
    x = 421,359.92

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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.