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Finding the Fourth Proportional to 144,384.36, 216,576.54 and 70,449

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Solution

The fourth proportional to 144,384.36, 216,576.54 and 70,449 is: 105,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,384.36 : 216,576.54 = 70,449 : x
  2. Step 2: Convert to fraction form
    144,384.36/216,576.54 = 70,449/x
  3. Step 3: Cross multiply
    144,384.36x = 216,576.54 × 70,449
  4. Step 4: Simplify right side
    144,384.36x = 15,257,600,666.46
  5. Step 5: Solve for x
    x = 15,257,600,666.46/144,384.36
  6. Step 6: Final answer
    x = 105,673.50

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1.5x scale

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.