Home / 383,069,138.04-528,637,024.86-215,807,406.12

Finding the Fourth Proportional to 383,069,138.04, 528,637,024.86 and 215,807,406.12

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Solution

The fourth proportional to 383,069,138.04, 528,637,024.86 and 215,807,406.12 is: 297,815,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,069,138.04 : 528,637,024.86 = 215,807,406.12 : x
  2. Step 2: Convert to fraction form
    383,069,138.04/528,637,024.86 = 215,807,406.12/x
  3. Step 3: Cross multiply
    383,069,138.04x = 528,637,024.86 × 215,807,406.12
  4. Step 4: Simplify right side
    383,069,138.04x = 114,083,785,114,030,560
  5. Step 5: Solve for x
    x = 114,083,785,114,030,560/383,069,138.04
  6. Step 6: Final answer
    x = 297,815,129.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.