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Finding the Fourth Proportional to 286,881.55, 430,317.46 and 99,888.19

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Solution

The fourth proportional to 286,881.55, 430,317.46 and 99,888.19 is: 149,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,881.55 : 430,317.46 = 99,888.19 : x
  2. Step 2: Convert to fraction form
    286,881.55/430,317.46 = 99,888.19/x
  3. Step 3: Cross multiply
    286,881.55x = 430,317.46 × 99,888.19
  4. Step 4: Simplify right side
    286,881.55x = 42,983,631,253.86
  5. Step 5: Solve for x
    x = 42,983,631,253.86/286,881.55
  6. Step 6: Final answer
    x = 149,830.59

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1.5x scale

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.