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Finding the Fourth Proportional to 521,325.74, 719,496.66 and 291,970.16

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Solution

The fourth proportional to 521,325.74, 719,496.66 and 291,970.16 is: 402,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,325.74 : 719,496.66 = 291,970.16 : x
  2. Step 2: Convert to fraction form
    521,325.74/719,496.66 = 291,970.16/x
  3. Step 3: Cross multiply
    521,325.74x = 719,496.66 × 291,970.16
  4. Step 4: Simplify right side
    521,325.74x = 210,071,554,939.67
  5. Step 5: Solve for x
    x = 210,071,554,939.67/521,325.74
  6. Step 6: Final answer
    x = 402,956.42

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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.