Home / 255,616,401.60-383,424,602.40-212,534,251.20

Finding the Fourth Proportional to 255,616,401.60, 383,424,602.40 and 212,534,251.20

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Solution

The fourth proportional to 255,616,401.60, 383,424,602.40 and 212,534,251.20 is: 318,801,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,616,401.60 : 383,424,602.40 = 212,534,251.20 : x
  2. Step 2: Convert to fraction form
    255,616,401.60/383,424,602.40 = 212,534,251.20/x
  3. Step 3: Cross multiply
    255,616,401.60x = 383,424,602.40 × 212,534,251.20
  4. Step 4: Simplify right side
    255,616,401.60x = 81,490,860,762,741,712
  5. Step 5: Solve for x
    x = 81,490,860,762,741,712/255,616,401.60
  6. Step 6: Final answer
    x = 318,801,376.80

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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.