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Finding the Fourth Proportional to 308,547.45, 462,855.20 and 98,136.18

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Solution

The fourth proportional to 308,547.45, 462,855.20 and 98,136.18 is: 147,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,547.45 : 462,855.20 = 98,136.18 : x
  2. Step 2: Convert to fraction form
    308,547.45/462,855.20 = 98,136.18/x
  3. Step 3: Cross multiply
    308,547.45x = 462,855.20 × 98,136.18
  4. Step 4: Simplify right side
    308,547.45x = 45,422,840,730.46
  5. Step 5: Solve for x
    x = 45,422,840,730.46/308,547.45
  6. Step 6: Final answer
    x = 147,215.09

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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.