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Finding the Fourth Proportional to 469,929.79, 648,485.65 and 255,065.23

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Solution

The fourth proportional to 469,929.79, 648,485.65 and 255,065.23 is: 351,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,929.79 : 648,485.65 = 255,065.23 : x
  2. Step 2: Convert to fraction form
    469,929.79/648,485.65 = 255,065.23/x
  3. Step 3: Cross multiply
    469,929.79x = 648,485.65 × 255,065.23
  4. Step 4: Simplify right side
    469,929.79x = 165,406,141,468.95
  5. Step 5: Solve for x
    x = 165,406,141,468.95/469,929.79
  6. Step 6: Final answer
    x = 351,980.54

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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.