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Finding the Fourth Proportional to 400,307.76, 601,148.70 and 355,430.52

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Solution

The fourth proportional to 400,307.76, 601,148.70 and 355,430.52 is: 533,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,307.76 : 601,148.70 = 355,430.52 : x
  2. Step 2: Convert to fraction form
    400,307.76/601,148.70 = 355,430.52/x
  3. Step 3: Cross multiply
    400,307.76x = 601,148.70 × 355,430.52
  4. Step 4: Simplify right side
    400,307.76x = 213,666,595,038.32
  5. Step 5: Solve for x
    x = 213,666,595,038.32/400,307.76
  6. Step 6: Final answer
    x = 533,755.82

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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.