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Finding the Fourth Proportional to 808,101, 1,212,157.58 and 358,701.05

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Solution

The fourth proportional to 808,101, 1,212,157.58 and 358,701.05 is: 538,054.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,101 : 1,212,157.58 = 358,701.05 : x
  2. Step 2: Convert to fraction form
    808,101/1,212,157.58 = 358,701.05/x
  3. Step 3: Cross multiply
    808,101x = 1,212,157.58 × 358,701.05
  4. Step 4: Simplify right side
    808,101x = 434,802,197,948.35
  5. Step 5: Solve for x
    x = 434,802,197,948.35/808,101
  6. Step 6: Final answer
    x = 538,054.28

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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.