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Finding the Fourth Proportional to 282,632.90, 390,055.10 and 161,812.08

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Solution

The fourth proportional to 282,632.90, 390,055.10 and 161,812.08 is: 223,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,632.90 : 390,055.10 = 161,812.08 : x
  2. Step 2: Convert to fraction form
    282,632.90/390,055.10 = 161,812.08/x
  3. Step 3: Cross multiply
    282,632.90x = 390,055.10 × 161,812.08
  4. Step 4: Simplify right side
    282,632.90x = 63,115,626,236.55
  5. Step 5: Solve for x
    x = 63,115,626,236.55/282,632.90
  6. Step 6: Final answer
    x = 223,313.09

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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.