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Finding the Fourth Proportional to 388,897.20, 583,345.80 and 365,277.60

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Solution

The fourth proportional to 388,897.20, 583,345.80 and 365,277.60 is: 547,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,897.20 : 583,345.80 = 365,277.60 : x
  2. Step 2: Convert to fraction form
    388,897.20/583,345.80 = 365,277.60/x
  3. Step 3: Cross multiply
    388,897.20x = 583,345.80 × 365,277.60
  4. Step 4: Simplify right side
    388,897.20x = 213,083,153,794.08
  5. Step 5: Solve for x
    x = 213,083,153,794.08/388,897.20
  6. Step 6: Final answer
    x = 547,916.40

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Similar ratio
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1.5x scale

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.