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Finding the Fourth Proportional to 554,164.72, 830,949 and 287,263.60

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Solution

The fourth proportional to 554,164.72, 830,949 and 287,263.60 is: 430,740.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,164.72 : 830,949 = 287,263.60 : x
  2. Step 2: Convert to fraction form
    554,164.72/830,949 = 287,263.60/x
  3. Step 3: Cross multiply
    554,164.72x = 830,949 × 287,263.60
  4. Step 4: Simplify right side
    554,164.72x = 238,701,401,156.40
  5. Step 5: Solve for x
    x = 238,701,401,156.40/554,164.72
  6. Step 6: Final answer
    x = 430,740.88

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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.