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Finding the Fourth Proportional to 547,280.84, 755,240.40 and 305,567.52

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Solution

The fourth proportional to 547,280.84, 755,240.40 and 305,567.52 is: 421,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,280.84 : 755,240.40 = 305,567.52 : x
  2. Step 2: Convert to fraction form
    547,280.84/755,240.40 = 305,567.52/x
  3. Step 3: Cross multiply
    547,280.84x = 755,240.40 × 305,567.52
  4. Step 4: Simplify right side
    547,280.84x = 230,776,936,031.81
  5. Step 5: Solve for x
    x = 230,776,936,031.81/547,280.84
  6. Step 6: Final answer
    x = 421,679.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.