Home / 386,957.18-533,971.63-217,158.50

Finding the Fourth Proportional to 386,957.18, 533,971.63 and 217,158.50

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Solution

The fourth proportional to 386,957.18, 533,971.63 and 217,158.50 is: 299,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,957.18 : 533,971.63 = 217,158.50 : x
  2. Step 2: Convert to fraction form
    386,957.18/533,971.63 = 217,158.50/x
  3. Step 3: Cross multiply
    386,957.18x = 533,971.63 × 217,158.50
  4. Step 4: Simplify right side
    386,957.18x = 115,956,478,213.36
  5. Step 5: Solve for x
    x = 115,956,478,213.36/386,957.18
  6. Step 6: Final answer
    x = 299,662.30

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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.