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Finding the Fourth Proportional to 472,985.63, 652,734 and 258,139.47

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Solution

The fourth proportional to 472,985.63, 652,734 and 258,139.47 is: 356,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,985.63 : 652,734 = 258,139.47 : x
  2. Step 2: Convert to fraction form
    472,985.63/652,734 = 258,139.47/x
  3. Step 3: Cross multiply
    472,985.63x = 652,734 × 258,139.47
  4. Step 4: Simplify right side
    472,985.63x = 168,496,408,810.98
  5. Step 5: Solve for x
    x = 168,496,408,810.98/472,985.63
  6. Step 6: Final answer
    x = 356,240.02

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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.