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Finding the Fourth Proportional to 245,312.80, 367,981.35 and 127,214.80

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Solution

The fourth proportional to 245,312.80, 367,981.35 and 127,214.80 is: 190,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,312.80 : 367,981.35 = 127,214.80 : x
  2. Step 2: Convert to fraction form
    245,312.80/367,981.35 = 127,214.80/x
  3. Step 3: Cross multiply
    245,312.80x = 367,981.35 × 127,214.80
  4. Step 4: Simplify right side
    245,312.80x = 46,812,673,843.98
  5. Step 5: Solve for x
    x = 46,812,673,843.98/245,312.80
  6. Step 6: Final answer
    x = 190,828.50

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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.