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Finding the Fourth Proportional to 282,762.50, 390,213.06 and 161,905.64

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Solution

The fourth proportional to 282,762.50, 390,213.06 and 161,905.64 is: 223,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,762.50 : 390,213.06 = 161,905.64 : x
  2. Step 2: Convert to fraction form
    282,762.50/390,213.06 = 161,905.64/x
  3. Step 3: Cross multiply
    282,762.50x = 390,213.06 × 161,905.64
  4. Step 4: Simplify right side
    282,762.50x = 63,177,695,215.66
  5. Step 5: Solve for x
    x = 63,177,695,215.66/282,762.50
  6. Step 6: Final answer
    x = 223,430.25

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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.