Home / 495,135.98-683,289.70-280,317.50

Finding the Fourth Proportional to 495,135.98, 683,289.70 and 280,317.50

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Solution

The fourth proportional to 495,135.98, 683,289.70 and 280,317.50 is: 386,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,135.98 : 683,289.70 = 280,317.50 : x
  2. Step 2: Convert to fraction form
    495,135.98/683,289.70 = 280,317.50/x
  3. Step 3: Cross multiply
    495,135.98x = 683,289.70 × 280,317.50
  4. Step 4: Simplify right side
    495,135.98x = 191,538,056,362.51
  5. Step 5: Solve for x
    x = 191,538,056,362.51/495,135.98
  6. Step 6: Final answer
    x = 386,839.30

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1.5x scale

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.