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Finding the Fourth Proportional to 507,880.16, 761,981.20 and 305,697.68

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Solution

The fourth proportional to 507,880.16, 761,981.20 and 305,697.68 is: 458,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,880.16 : 761,981.20 = 305,697.68 : x
  2. Step 2: Convert to fraction form
    507,880.16/761,981.20 = 305,697.68/x
  3. Step 3: Cross multiply
    507,880.16x = 761,981.20 × 305,697.68
  4. Step 4: Simplify right side
    507,880.16x = 232,935,885,043.62
  5. Step 5: Solve for x
    x = 232,935,885,043.62/507,880.16
  6. Step 6: Final answer
    x = 458,643.40

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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.