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Finding the Fourth Proportional to 545,223.42, 817,303.56 and 260,839.74

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Solution

The fourth proportional to 545,223.42, 817,303.56 and 260,839.74 is: 391,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,223.42 : 817,303.56 = 260,839.74 : x
  2. Step 2: Convert to fraction form
    545,223.42/817,303.56 = 260,839.74/x
  3. Step 3: Cross multiply
    545,223.42x = 817,303.56 × 260,839.74
  4. Step 4: Simplify right side
    545,223.42x = 213,185,248,091.47
  5. Step 5: Solve for x
    x = 213,185,248,091.47/545,223.42
  6. Step 6: Final answer
    x = 391,005.30

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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.