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Finding the Fourth Proportional to 252,655.68, 348,662.68 and 139,476

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Solution

The fourth proportional to 252,655.68, 348,662.68 and 139,476 is: 192,475.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,655.68 : 348,662.68 = 139,476 : x
  2. Step 2: Convert to fraction form
    252,655.68/348,662.68 = 139,476/x
  3. Step 3: Cross multiply
    252,655.68x = 348,662.68 × 139,476
  4. Step 4: Simplify right side
    252,655.68x = 48,630,075,955.68
  5. Step 5: Solve for x
    x = 48,630,075,955.68/252,655.68
  6. Step 6: Final answer
    x = 192,475.69

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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.