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Finding the Fourth Proportional to 539,038.88, 808,733.28 and 258,578.08

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Solution

The fourth proportional to 539,038.88, 808,733.28 and 258,578.08 is: 387,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,038.88 : 808,733.28 = 258,578.08 : x
  2. Step 2: Convert to fraction form
    539,038.88/808,733.28 = 258,578.08/x
  3. Step 3: Cross multiply
    539,038.88x = 808,733.28 × 258,578.08
  4. Step 4: Simplify right side
    539,038.88x = 209,120,698,774.50
  5. Step 5: Solve for x
    x = 209,120,698,774.50/539,038.88
  6. Step 6: Final answer
    x = 387,951.05

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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.