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Finding the Fourth Proportional to 236,807.40, 355,124.70 and 118,439.40

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Solution

The fourth proportional to 236,807.40, 355,124.70 and 118,439.40 is: 177,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,807.40 : 355,124.70 = 118,439.40 : x
  2. Step 2: Convert to fraction form
    236,807.40/355,124.70 = 118,439.40/x
  3. Step 3: Cross multiply
    236,807.40x = 355,124.70 × 118,439.40
  4. Step 4: Simplify right side
    236,807.40x = 42,060,756,393.18
  5. Step 5: Solve for x
    x = 42,060,756,393.18/236,807.40
  6. Step 6: Final answer
    x = 177,615.89

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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.