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Finding the Fourth Proportional to 286,907.22, 430,360.11 and 87,226.74

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Solution

The fourth proportional to 286,907.22, 430,360.11 and 87,226.74 is: 130,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,907.22 : 430,360.11 = 87,226.74 : x
  2. Step 2: Convert to fraction form
    286,907.22/430,360.11 = 87,226.74/x
  3. Step 3: Cross multiply
    286,907.22x = 430,360.11 × 87,226.74
  4. Step 4: Simplify right side
    286,907.22x = 37,538,909,421.34
  5. Step 5: Solve for x
    x = 37,538,909,421.34/286,907.22
  6. Step 6: Final answer
    x = 130,839.89

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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.