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Finding the Fourth Proportional to 370,264.65, 510,607.44 and 312,905.31

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Solution

The fourth proportional to 370,264.65, 510,607.44 and 312,905.31 is: 431,506.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,264.65 : 510,607.44 = 312,905.31 : x
  2. Step 2: Convert to fraction form
    370,264.65/510,607.44 = 312,905.31/x
  3. Step 3: Cross multiply
    370,264.65x = 510,607.44 × 312,905.31
  4. Step 4: Simplify right side
    370,264.65x = 159,771,779,301.51
  5. Step 5: Solve for x
    x = 159,771,779,301.51/370,264.65
  6. Step 6: Final answer
    x = 431,506.98

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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.