Home / 386,970.93-533,990.58-217,172.25

Finding the Fourth Proportional to 386,970.93, 533,990.58 and 217,172.25

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Solution

The fourth proportional to 386,970.93, 533,990.58 and 217,172.25 is: 299,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,970.93 : 533,990.58 = 217,172.25 : x
  2. Step 2: Convert to fraction form
    386,970.93/533,990.58 = 217,172.25/x
  3. Step 3: Cross multiply
    386,970.93x = 533,990.58 × 217,172.25
  4. Step 4: Simplify right side
    386,970.93x = 115,967,935,737.41
  5. Step 5: Solve for x
    x = 115,967,935,737.41/386,970.93
  6. Step 6: Final answer
    x = 299,681.26

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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.