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Finding the Fourth Proportional to 358,956.40, 538,434.60 and 209,365.60

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Solution

The fourth proportional to 358,956.40, 538,434.60 and 209,365.60 is: 314,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,956.40 : 538,434.60 = 209,365.60 : x
  2. Step 2: Convert to fraction form
    358,956.40/538,434.60 = 209,365.60/x
  3. Step 3: Cross multiply
    358,956.40x = 538,434.60 × 209,365.60
  4. Step 4: Simplify right side
    358,956.40x = 112,729,683,089.76
  5. Step 5: Solve for x
    x = 112,729,683,089.76/358,956.40
  6. Step 6: Final answer
    x = 314,048.40

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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.