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Finding the Fourth Proportional to 268,498.80, 370,526.40 and 153,802.80

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Solution

The fourth proportional to 268,498.80, 370,526.40 and 153,802.80 is: 212,246.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,498.80 : 370,526.40 = 153,802.80 : x
  2. Step 2: Convert to fraction form
    268,498.80/370,526.40 = 153,802.80/x
  3. Step 3: Cross multiply
    268,498.80x = 370,526.40 × 153,802.80
  4. Step 4: Simplify right side
    268,498.80x = 56,987,997,793.92
  5. Step 5: Solve for x
    x = 56,987,997,793.92/268,498.80
  6. Step 6: Final answer
    x = 212,246.75

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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.