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Finding the Fourth Proportional to 551,807.51, 761,509.53 and 310,112.12

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Solution

The fourth proportional to 551,807.51, 761,509.53 and 310,112.12 is: 427,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,807.51 : 761,509.53 = 310,112.12 : x
  2. Step 2: Convert to fraction form
    551,807.51/761,509.53 = 310,112.12/x
  3. Step 3: Cross multiply
    551,807.51x = 761,509.53 × 310,112.12
  4. Step 4: Simplify right side
    551,807.51x = 236,153,334,748.50
  5. Step 5: Solve for x
    x = 236,153,334,748.50/551,807.51
  6. Step 6: Final answer
    x = 427,963.25

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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.