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Finding the Fourth Proportional to 358,900.40, 538,307.40 and 148,516.40

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Solution

The fourth proportional to 358,900.40, 538,307.40 and 148,516.40 is: 222,756.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,900.40 : 538,307.40 = 148,516.40 : x
  2. Step 2: Convert to fraction form
    358,900.40/538,307.40 = 148,516.40/x
  3. Step 3: Cross multiply
    358,900.40x = 538,307.40 × 148,516.40
  4. Step 4: Simplify right side
    358,900.40x = 79,947,477,141.36
  5. Step 5: Solve for x
    x = 79,947,477,141.36/358,900.40
  6. Step 6: Final answer
    x = 222,756.72

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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.