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Finding the Fourth Proportional to 304,136.40, 426,490.80 and 304,136.40

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Solution

The fourth proportional to 304,136.40, 426,490.80 and 304,136.40 is: 426,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,136.40 : 426,490.80 = 304,136.40 : x
  2. Step 2: Convert to fraction form
    304,136.40/426,490.80 = 304,136.40/x
  3. Step 3: Cross multiply
    304,136.40x = 426,490.80 × 304,136.40
  4. Step 4: Simplify right side
    304,136.40x = 129,711,376,545.12
  5. Step 5: Solve for x
    x = 129,711,376,545.12/304,136.40
  6. Step 6: Final answer
    x = 426,490.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.