Home / 390,079.20-584,681.40-200,466.30

Finding the Fourth Proportional to 390,079.20, 584,681.40 and 200,466.30

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Solution

The fourth proportional to 390,079.20, 584,681.40 and 200,466.30 is: 300,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,079.20 : 584,681.40 = 200,466.30 : x
  2. Step 2: Convert to fraction form
    390,079.20/584,681.40 = 200,466.30/x
  3. Step 3: Cross multiply
    390,079.20x = 584,681.40 × 200,466.30
  4. Step 4: Simplify right side
    390,079.20x = 117,208,916,936.82
  5. Step 5: Solve for x
    x = 117,208,916,936.82/390,079.20
  6. Step 6: Final answer
    x = 300,474.66

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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.