Home / 369,275.04-509,614.40-208,136.80

Finding the Fourth Proportional to 369,275.04, 509,614.40 and 208,136.80

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Solution

The fourth proportional to 369,275.04, 509,614.40 and 208,136.80 is: 287,237.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,275.04 : 509,614.40 = 208,136.80 : x
  2. Step 2: Convert to fraction form
    369,275.04/509,614.40 = 208,136.80/x
  3. Step 3: Cross multiply
    369,275.04x = 509,614.40 × 208,136.80
  4. Step 4: Simplify right side
    369,275.04x = 106,069,510,449.92
  5. Step 5: Solve for x
    x = 106,069,510,449.92/369,275.04
  6. Step 6: Final answer
    x = 287,237.15

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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.