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Finding the Fourth Proportional to 553,010.88, 763,142.45 and 307,993.98

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Solution

The fourth proportional to 553,010.88, 763,142.45 and 307,993.98 is: 425,024.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,010.88 : 763,142.45 = 307,993.98 : x
  2. Step 2: Convert to fraction form
    553,010.88/763,142.45 = 307,993.98/x
  3. Step 3: Cross multiply
    553,010.88x = 763,142.45 × 307,993.98
  4. Step 4: Simplify right side
    553,010.88x = 235,043,277,436.72
  5. Step 5: Solve for x
    x = 235,043,277,436.72/553,010.88
  6. Step 6: Final answer
    x = 425,024.69

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1.5x scale

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.