Home / 385,624.56-578,430.63-105,141.81

Finding the Fourth Proportional to 385,624.56, 578,430.63 and 105,141.81

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Solution

The fourth proportional to 385,624.56, 578,430.63 and 105,141.81 is: 157,711.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,624.56 : 578,430.63 = 105,141.81 : x
  2. Step 2: Convert to fraction form
    385,624.56/578,430.63 = 105,141.81/x
  3. Step 3: Cross multiply
    385,624.56x = 578,430.63 × 105,141.81
  4. Step 4: Simplify right side
    385,624.56x = 60,817,243,397.64
  5. Step 5: Solve for x
    x = 60,817,243,397.64/385,624.56
  6. Step 6: Final answer
    x = 157,711.02

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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.