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Finding the Fourth Proportional to 282,627.60, 424,632.60 and 212,643.60

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Solution

The fourth proportional to 282,627.60, 424,632.60 and 212,643.60 is: 319,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,627.60 : 424,632.60 = 212,643.60 : x
  2. Step 2: Convert to fraction form
    282,627.60/424,632.60 = 212,643.60/x
  3. Step 3: Cross multiply
    282,627.60x = 424,632.60 × 212,643.60
  4. Step 4: Simplify right side
    282,627.60x = 90,295,404,741.36
  5. Step 5: Solve for x
    x = 90,295,404,741.36/282,627.60
  6. Step 6: Final answer
    x = 319,485.45

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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.