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Finding the Fourth Proportional to 369,720.72, 554,496.12 and 103,499.64

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Solution

The fourth proportional to 369,720.72, 554,496.12 and 103,499.64 is: 155,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,720.72 : 554,496.12 = 103,499.64 : x
  2. Step 2: Convert to fraction form
    369,720.72/554,496.12 = 103,499.64/x
  3. Step 3: Cross multiply
    369,720.72x = 554,496.12 × 103,499.64
  4. Step 4: Simplify right side
    369,720.72x = 57,390,148,801.40
  5. Step 5: Solve for x
    x = 57,390,148,801.40/369,720.72
  6. Step 6: Final answer
    x = 155,225.68

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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.