Home / 328,536,429.30-492,804,643.95-199,289,978.10

Finding the Fourth Proportional to 328,536,429.30, 492,804,643.95 and 199,289,978.10

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Solution

The fourth proportional to 328,536,429.30, 492,804,643.95 and 199,289,978.10 is: 298,934,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,536,429.30 : 492,804,643.95 = 199,289,978.10 : x
  2. Step 2: Convert to fraction form
    328,536,429.30/492,804,643.95 = 199,289,978.10/x
  3. Step 3: Cross multiply
    328,536,429.30x = 492,804,643.95 × 199,289,978.10
  4. Step 4: Simplify right side
    328,536,429.30x = 98,211,026,700,373,792
  5. Step 5: Solve for x
    x = 98,211,026,700,373,792/328,536,429.30
  6. Step 6: Final answer
    x = 298,934,967.15

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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.