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Finding the Fourth Proportional to 349,985.76, 525,233.28 and 139,683.84

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Solution

The fourth proportional to 349,985.76, 525,233.28 and 139,683.84 is: 209,627.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,985.76 : 525,233.28 = 139,683.84 : x
  2. Step 2: Convert to fraction form
    349,985.76/525,233.28 = 139,683.84/x
  3. Step 3: Cross multiply
    349,985.76x = 525,233.28 × 139,683.84
  4. Step 4: Simplify right side
    349,985.76x = 73,366,601,446.20
  5. Step 5: Solve for x
    x = 73,366,601,446.20/349,985.76
  6. Step 6: Final answer
    x = 209,627.39

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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.