Home / 288,280.63-432,421.06-77,918.57

Finding the Fourth Proportional to 288,280.63, 432,421.06 and 77,918.57

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Solution

The fourth proportional to 288,280.63, 432,421.06 and 77,918.57 is: 116,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,280.63 : 432,421.06 = 77,918.57 : x
  2. Step 2: Convert to fraction form
    288,280.63/432,421.06 = 77,918.57/x
  3. Step 3: Cross multiply
    288,280.63x = 432,421.06 × 77,918.57
  4. Step 4: Simplify right side
    288,280.63x = 33,693,630,633.08
  5. Step 5: Solve for x
    x = 33,693,630,633.08/288,280.63
  6. Step 6: Final answer
    x = 116,877.89

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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.