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Finding the Fourth Proportional to 385,628.52, 532,030.50 and 251,259.24

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Solution

The fourth proportional to 385,628.52, 532,030.50 and 251,259.24 is: 346,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,628.52 : 532,030.50 = 251,259.24 : x
  2. Step 2: Convert to fraction form
    385,628.52/532,030.50 = 251,259.24/x
  3. Step 3: Cross multiply
    385,628.52x = 532,030.50 × 251,259.24
  4. Step 4: Simplify right side
    385,628.52x = 133,677,579,086.82
  5. Step 5: Solve for x
    x = 133,677,579,086.82/385,628.52
  6. Step 6: Final answer
    x = 346,648.58

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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.