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Finding the Fourth Proportional to 459,930.98, 689,075.67 and 249,434.66

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Solution

The fourth proportional to 459,930.98, 689,075.67 and 249,434.66 is: 373,706.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,930.98 : 689,075.67 = 249,434.66 : x
  2. Step 2: Convert to fraction form
    459,930.98/689,075.67 = 249,434.66/x
  3. Step 3: Cross multiply
    459,930.98x = 689,075.67 × 249,434.66
  4. Step 4: Simplify right side
    459,930.98x = 171,879,355,460.72
  5. Step 5: Solve for x
    x = 171,879,355,460.72/459,930.98
  6. Step 6: Final answer
    x = 373,706.85

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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.