Finding the Fourth Proportional to 292,747,631.28, 439,078,252.91 and 85,430,377.08
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Solution
The fourth proportional to 292,747,631.28, 439,078,252.91 and 85,430,377.08 is: 128,132,960.63
Step by Step Solution
- Step 1: Write the proportion equation
292,747,631.28 : 439,078,252.91 = 85,430,377.08 : x - Step 2: Convert to fraction form
292,747,631.28/439,078,252.91 = 85,430,377.08/x - Step 3: Cross multiply
292,747,631.28x = 439,078,252.91 × 85,430,377.08 - Step 4: Simplify right side
292,747,631.28x = 37,510,620,713,301,752 - Step 5: Solve for x
x = 37,510,620,713,301,752/292,747,631.28 - Step 6: Final answer
x = 128,132,960.63
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.