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Finding the Fourth Proportional to 354,530.72, 530,547.60 and 221,473.44

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Solution

The fourth proportional to 354,530.72, 530,547.60 and 221,473.44 is: 331,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,530.72 : 530,547.60 = 221,473.44 : x
  2. Step 2: Convert to fraction form
    354,530.72/530,547.60 = 221,473.44/x
  3. Step 3: Cross multiply
    354,530.72x = 530,547.60 × 221,473.44
  4. Step 4: Simplify right side
    354,530.72x = 117,502,202,055.74
  5. Step 5: Solve for x
    x = 117,502,202,055.74/354,530.72
  6. Step 6: Final answer
    x = 331,430.24

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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.