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Finding the Fourth Proportional to 495,012.42, 742,830.99 and 210,702.51

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Solution

The fourth proportional to 495,012.42, 742,830.99 and 210,702.51 is: 316,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,012.42 : 742,830.99 = 210,702.51 : x
  2. Step 2: Convert to fraction form
    495,012.42/742,830.99 = 210,702.51/x
  3. Step 3: Cross multiply
    495,012.42x = 742,830.99 × 210,702.51
  4. Step 4: Simplify right side
    495,012.42x = 156,516,354,888.92
  5. Step 5: Solve for x
    x = 156,516,354,888.92/495,012.42
  6. Step 6: Final answer
    x = 316,186.72

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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.