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Finding the Fourth Proportional to 369,307.80, 553,863.27 and 103,021.40

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Solution

The fourth proportional to 369,307.80, 553,863.27 and 103,021.40 is: 154,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,307.80 : 553,863.27 = 103,021.40 : x
  2. Step 2: Convert to fraction form
    369,307.80/553,863.27 = 103,021.40/x
  3. Step 3: Cross multiply
    369,307.80x = 553,863.27 × 103,021.40
  4. Step 4: Simplify right side
    369,307.80x = 57,059,769,483.98
  5. Step 5: Solve for x
    x = 57,059,769,483.98/369,307.80
  6. Step 6: Final answer
    x = 154,504.64

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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.