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Finding the Fourth Proportional to 358,475.60, 495,139.56 and 262,830.80

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Solution

The fourth proportional to 358,475.60, 495,139.56 and 262,830.80 is: 363,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,475.60 : 495,139.56 = 262,830.80 : x
  2. Step 2: Convert to fraction form
    358,475.60/495,139.56 = 262,830.80/x
  3. Step 3: Cross multiply
    358,475.60x = 495,139.56 × 262,830.80
  4. Step 4: Simplify right side
    358,475.60x = 130,137,926,666.45
  5. Step 5: Solve for x
    x = 130,137,926,666.45/358,475.60
  6. Step 6: Final answer
    x = 363,031.48

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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.