Home / 258,444,830.60-387,667,245.90-212,528,328.20

Finding the Fourth Proportional to 258,444,830.60, 387,667,245.90 and 212,528,328.20

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Solution

The fourth proportional to 258,444,830.60, 387,667,245.90 and 212,528,328.20 is: 318,792,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,444,830.60 : 387,667,245.90 = 212,528,328.20 : x
  2. Step 2: Convert to fraction form
    258,444,830.60/387,667,245.90 = 212,528,328.20/x
  3. Step 3: Cross multiply
    258,444,830.60x = 387,667,245.90 × 212,528,328.20
  4. Step 4: Simplify right side
    258,444,830.60x = 82,390,271,669,025,296
  5. Step 5: Solve for x
    x = 82,390,271,669,025,296/258,444,830.60
  6. Step 6: Final answer
    x = 318,792,492.30

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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.