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Finding the Fourth Proportional to 364,069.80, 545,715.90 and 139,343.40

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Solution

The fourth proportional to 364,069.80, 545,715.90 and 139,343.40 is: 208,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,069.80 : 545,715.90 = 139,343.40 : x
  2. Step 2: Convert to fraction form
    364,069.80/545,715.90 = 139,343.40/x
  3. Step 3: Cross multiply
    364,069.80x = 545,715.90 × 139,343.40
  4. Step 4: Simplify right side
    364,069.80x = 76,041,908,940.06
  5. Step 5: Solve for x
    x = 76,041,908,940.06/364,069.80
  6. Step 6: Final answer
    x = 208,866.29

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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.