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Finding the Fourth Proportional to 519,258.08, 778,608.48 and 266,434.40

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Solution

The fourth proportional to 519,258.08, 778,608.48 and 266,434.40 is: 399,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,258.08 : 778,608.48 = 266,434.40 : x
  2. Step 2: Convert to fraction form
    519,258.08/778,608.48 = 266,434.40/x
  3. Step 3: Cross multiply
    519,258.08x = 778,608.48 × 266,434.40
  4. Step 4: Simplify right side
    519,258.08x = 207,448,083,203.71
  5. Step 5: Solve for x
    x = 207,448,083,203.71/519,258.08
  6. Step 6: Final answer
    x = 399,508.63

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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.