Home / 291,315,281.53-402,015,249.81-157,353,197.16

Finding the Fourth Proportional to 291,315,281.53, 402,015,249.81 and 157,353,197.16

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Solution

The fourth proportional to 291,315,281.53, 402,015,249.81 and 157,353,197.16 is: 217,147,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,315,281.53 : 402,015,249.81 = 157,353,197.16 : x
  2. Step 2: Convert to fraction form
    291,315,281.53/402,015,249.81 = 157,353,197.16/x
  3. Step 3: Cross multiply
    291,315,281.53x = 402,015,249.81 × 157,353,197.16
  4. Step 4: Simplify right side
    291,315,281.53x = 63,258,384,864,679,584
  5. Step 5: Solve for x
    x = 63,258,384,864,679,584/291,315,281.53
  6. Step 6: Final answer
    x = 217,147,499.21

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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.