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Finding the Fourth Proportional to 483,507, 725,259.71 and 128,521.03

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Solution

The fourth proportional to 483,507, 725,259.71 and 128,521.03 is: 192,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,507 : 725,259.71 = 128,521.03 : x
  2. Step 2: Convert to fraction form
    483,507/725,259.71 = 128,521.03/x
  3. Step 3: Cross multiply
    483,507x = 725,259.71 × 128,521.03
  4. Step 4: Simplify right side
    483,507x = 93,211,124,946.70
  5. Step 5: Solve for x
    x = 93,211,124,946.70/483,507
  6. Step 6: Final answer
    x = 192,781.34

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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.