Home / 291,931,397.21-400,719,379.41-258,151,520.09

Finding the Fourth Proportional to 291,931,397.21, 400,719,379.41 and 258,151,520.09

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Solution

The fourth proportional to 291,931,397.21, 400,719,379.41 and 258,151,520.09 is: 354,351,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,931,397.21 : 400,719,379.41 = 258,151,520.09 : x
  2. Step 2: Convert to fraction form
    291,931,397.21/400,719,379.41 = 258,151,520.09/x
  3. Step 3: Cross multiply
    291,931,397.21x = 400,719,379.41 × 258,151,520.09
  4. Step 4: Simplify right side
    291,931,397.21x = 103,446,316,922,209,360
  5. Step 5: Solve for x
    x = 103,446,316,922,209,360/291,931,397.21
  6. Step 6: Final answer
    x = 354,351,460.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.