Home / 255,616,428.60-383,424,642.90-212,534,278.20

Finding the Fourth Proportional to 255,616,428.60, 383,424,642.90 and 212,534,278.20

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Solution

The fourth proportional to 255,616,428.60, 383,424,642.90 and 212,534,278.20 is: 318,801,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,616,428.60 : 383,424,642.90 = 212,534,278.20 : x
  2. Step 2: Convert to fraction form
    255,616,428.60/383,424,642.90 = 212,534,278.20/x
  3. Step 3: Cross multiply
    255,616,428.60x = 383,424,642.90 × 212,534,278.20
  4. Step 4: Simplify right side
    255,616,428.60x = 81,490,879,722,844,240
  5. Step 5: Solve for x
    x = 81,490,879,722,844,240/255,616,428.60
  6. Step 6: Final answer
    x = 318,801,417.30

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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.