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Finding the Fourth Proportional to 228,148.40, 342,261.40 and 70,347.44

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Solution

The fourth proportional to 228,148.40, 342,261.40 and 70,347.44 is: 105,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,148.40 : 342,261.40 = 70,347.44 : x
  2. Step 2: Convert to fraction form
    228,148.40/342,261.40 = 70,347.44/x
  3. Step 3: Cross multiply
    228,148.40x = 342,261.40 × 70,347.44
  4. Step 4: Simplify right side
    228,148.40x = 24,077,213,300.82
  5. Step 5: Solve for x
    x = 24,077,213,300.82/228,148.40
  6. Step 6: Final answer
    x = 105,533.12

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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.