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Finding the Fourth Proportional to 349,923.50, 524,963.02 and 128,307.50

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Solution

The fourth proportional to 349,923.50, 524,963.02 and 128,307.50 is: 192,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,923.50 : 524,963.02 = 128,307.50 : x
  2. Step 2: Convert to fraction form
    349,923.50/524,963.02 = 128,307.50/x
  3. Step 3: Cross multiply
    349,923.50x = 524,963.02 × 128,307.50
  4. Step 4: Simplify right side
    349,923.50x = 67,356,692,688.65
  5. Step 5: Solve for x
    x = 67,356,692,688.65/349,923.50
  6. Step 6: Final answer
    x = 192,489.77

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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.