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Finding the Fourth Proportional to 495,266.40, 742,899.60 and 258,681.60

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Solution

The fourth proportional to 495,266.40, 742,899.60 and 258,681.60 is: 388,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,266.40 : 742,899.60 = 258,681.60 : x
  2. Step 2: Convert to fraction form
    495,266.40/742,899.60 = 258,681.60/x
  3. Step 3: Cross multiply
    495,266.40x = 742,899.60 × 258,681.60
  4. Step 4: Simplify right side
    495,266.40x = 192,174,457,167.36
  5. Step 5: Solve for x
    x = 192,174,457,167.36/495,266.40
  6. Step 6: Final answer
    x = 388,022.40

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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.