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Finding the Fourth Proportional to 545,870.78, 753,291.63 and 304,148.15

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Solution

The fourth proportional to 545,870.78, 753,291.63 and 304,148.15 is: 419,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,870.78 : 753,291.63 = 304,148.15 : x
  2. Step 2: Convert to fraction form
    545,870.78/753,291.63 = 304,148.15/x
  3. Step 3: Cross multiply
    545,870.78x = 753,291.63 × 304,148.15
  4. Step 4: Simplify right side
    545,870.78x = 229,112,254,733.37
  5. Step 5: Solve for x
    x = 229,112,254,733.37/545,870.78
  6. Step 6: Final answer
    x = 419,718.85

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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.