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Finding the Fourth Proportional to 545,118.90, 817,678.35 and 245,937.30

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Solution

The fourth proportional to 545,118.90, 817,678.35 and 245,937.30 is: 368,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,118.90 : 817,678.35 = 245,937.30 : x
  2. Step 2: Convert to fraction form
    545,118.90/817,678.35 = 245,937.30/x
  3. Step 3: Cross multiply
    545,118.90x = 817,678.35 × 245,937.30
  4. Step 4: Simplify right side
    545,118.90x = 201,097,605,667.46
  5. Step 5: Solve for x
    x = 201,097,605,667.46/545,118.90
  6. Step 6: Final answer
    x = 368,905.95

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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.