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Finding the Fourth Proportional to 286,593.08, 429,889.61 and 128,637

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Solution

The fourth proportional to 286,593.08, 429,889.61 and 128,637 is: 192,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,593.08 : 429,889.61 = 128,637 : x
  2. Step 2: Convert to fraction form
    286,593.08/429,889.61 = 128,637/x
  3. Step 3: Cross multiply
    286,593.08x = 429,889.61 × 128,637
  4. Step 4: Simplify right side
    286,593.08x = 55,299,709,118.39
  5. Step 5: Solve for x
    x = 55,299,709,118.39/286,593.08
  6. Step 6: Final answer
    x = 192,955.50

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1.5x scale

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.