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Finding the Fourth Proportional to 348,762.21, 521,783.64 and 305,726.01

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Solution

The fourth proportional to 348,762.21, 521,783.64 and 305,726.01 is: 457,397.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,762.21 : 521,783.64 = 305,726.01 : x
  2. Step 2: Convert to fraction form
    348,762.21/521,783.64 = 305,726.01/x
  3. Step 3: Cross multiply
    348,762.21x = 521,783.64 × 305,726.01
  4. Step 4: Simplify right side
    348,762.21x = 159,522,830,340.48
  5. Step 5: Solve for x
    x = 159,522,830,340.48/348,762.21
  6. Step 6: Final answer
    x = 457,397.12

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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.