Finding the Fourth Proportional to 318,854,558.70, 478,393,812.45 and 137,157,432.30
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Solution
The fourth proportional to 318,854,558.70, 478,393,812.45 and 137,157,432.30 is: 205,784,314.99
Step by Step Solution
- Step 1: Write the proportion equation
318,854,558.70 : 478,393,812.45 = 137,157,432.30 : x - Step 2: Convert to fraction form
318,854,558.70/478,393,812.45 = 137,157,432.30/x - Step 3: Cross multiply
318,854,558.70x = 478,393,812.45 × 137,157,432.30 - Step 4: Simplify right side
318,854,558.70x = 65,615,266,943,849,776 - Step 5: Solve for x
x = 65,615,266,943,849,776/318,854,558.70 - Step 6: Final answer
x = 205,784,314.99
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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.