Home / 255,172.47-381,822.58-212,948.32

Finding the Fourth Proportional to 255,172.47, 381,822.58 and 212,948.32

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Solution

The fourth proportional to 255,172.47, 381,822.58 and 212,948.32 is: 318,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,172.47 : 381,822.58 = 212,948.32 : x
  2. Step 2: Convert to fraction form
    255,172.47/381,822.58 = 212,948.32/x
  3. Step 3: Cross multiply
    255,172.47x = 381,822.58 × 212,948.32
  4. Step 4: Simplify right side
    255,172.47x = 81,308,476,949.07
  5. Step 5: Solve for x
    x = 81,308,476,949.07/255,172.47
  6. Step 6: Final answer
    x = 318,641.26

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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.