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Finding the Fourth Proportional to 388,927.20, 584,265.60 and 374,055.60

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Solution

The fourth proportional to 388,927.20, 584,265.60 and 374,055.60 is: 561,924.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,927.20 : 584,265.60 = 374,055.60 : x
  2. Step 2: Convert to fraction form
    388,927.20/584,265.60 = 374,055.60/x
  3. Step 3: Cross multiply
    388,927.20x = 584,265.60 × 374,055.60
  4. Step 4: Simplify right side
    388,927.20x = 218,547,819,567.36
  5. Step 5: Solve for x
    x = 218,547,819,567.36/388,927.20
  6. Step 6: Final answer
    x = 561,924.75

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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.