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Finding the Fourth Proportional to 291,637, 402,459.06 and 157,501

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Solution

The fourth proportional to 291,637, 402,459.06 and 157,501 is: 217,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,637 : 402,459.06 = 157,501 : x
  2. Step 2: Convert to fraction form
    291,637/402,459.06 = 157,501/x
  3. Step 3: Cross multiply
    291,637x = 402,459.06 × 157,501
  4. Step 4: Simplify right side
    291,637x = 63,387,704,409.06
  5. Step 5: Solve for x
    x = 63,387,704,409.06/291,637
  6. Step 6: Final answer
    x = 217,351.38

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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.